San Mateo, California Weather:
Tuesday, September 1, 2026
Sunny Weather
Day 73°
Night 57°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 8
Weather Forecast History
Last Year's Weather on This Day (September 1, 2025)
Cloudy Night

Day

90°

Night

59°

Wind

8 mph

Precipitation

0 %